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Groups > linux.kernel > #1655504
| From | Ben Hutchings <ben@decadent.org.uk> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 3.16 011/212] MIPS: Handle microMIPS jumps in the same way as MIPS32/MIPS64 jumps |
| Date | 2017-06-01 18:50 +0200 |
| Message-ID | <tNBsn-53m-61@gated-at.bofh.it> (permalink) |
| References | <tNAwh-4oP-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
3.16.44-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Paul Burton <paul.burton@imgtec.com>
commit 096a0de427ea333f56f0ee00328cff2a2731bcf1 upstream.
is_jump_ins() checks for plain jump ("j") instructions since commit
e7438c4b893e ("MIPS: Fix sibling call handling in get_frame_info") but
that commit didn't make the same change to the microMIPS code, leaving
it inconsistent with the MIPS32/MIPS64 code. Handle the microMIPS
encoding of the jump instruction too such that it behaves consistently.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: e7438c4b893e ("MIPS: Fix sibling call handling in get_frame_info")
Cc: Tony Wu <tung7970@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14533/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/mips/kernel/process.c | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -321,6 +321,8 @@ static inline int is_jump_ins(union mips
return 0;
}
+ if (ip->j_format.opcode == mm_j32_op)
+ return 1;
if (ip->j_format.opcode == mm_jal32_op)
return 1;
if (ip->r_format.opcode != mm_pool32a_op ||
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[PATCH 3.16 000/212] 3.16.44-rc1 review Ben Hutchings <ben@decadent.org.uk> - 2017-06-01 18:50 +0200 [PATCH 3.16 003/212] adm80211: return an error if adm8211_alloc_rings() fails Ben Hutchings <ben@decadent.org.uk> - 2017-06-01 18:50 +0200 [PATCH 3.16 006/212] MIPS: Clear ISA bit correctly in get_frame_info() Ben Hutchings <ben@decadent.org.uk> - 2017-06-01 18:50 +0200 [PATCH 3.16 023/212] Drivers: hv: vmbus: Raise retry/wait limits in vmbus_post_msg() Ben Hutchings <ben@decadent.org.uk> - 2017-06-01 18:50 +0200 [PATCH 3.16 008/212] MIPS: Fix get_frame_info() handling of microMIPS function size Ben Hutchings <ben@decadent.org.uk> - 2017-06-01 18:50 +0200 [PATCH 3.16 011/212] MIPS: Handle microMIPS jumps in the same way as MIPS32/MIPS64 jumps Ben Hutchings <ben@decadent.org.uk> - 2017-06-01 18:50 +0200 [PATCH 3.16 031/212] ASoC: rt5640: use msleep() for long delays Ben Hutchings <ben@decadent.org.uk> - 2017-06-01 18:50 +0200 [PATCH 3.16 027/212] ext4: avoid deadlock when expanding inode size Ben Hutchings <ben@decadent.org.uk> - 2017-06-01 18:50 +0200 [PATCH 3.16 004/212] iio: st_pressure: Fix data sign Ben Hutchings <ben@decadent.org.uk> - 2017-06-01 18:50 +0200 [PATCH 3.16 001/212] mm/huge_memory.c: fix up "mm/huge_memory.c: respect FOLL_FORCE/FOLL_COW for thp" backport Ben Hutchings <ben@decadent.org.uk> - 2017-06-01 18:50 +0200 Re: [PATCH 3.16 000/212] 3.16.44-rc1 review Guenter Roeck <linux@roeck-us.net> - 2017-06-01 23:20 +0200
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